What is uk-grid-atlas?

Grid Atlas is an interactive, dark themed map that shows how electricity grids work across Great Britain, ten other European countries, and the United States, plus a combined transatlantic view. It plots tens of thousands of power generation sites, from nuclear and gas plants to offshore wind farms and battery storage, each sized by how much power it can produce and colored by fuel type. Hovering over a site shows its capacity, operator, and when it started running. On top of the generation sites, the map shows each country high voltage transmission network, styled by voltage level, along with the international HVDC power cables that connect grids together, including links that are still under construction. A legend lets you toggle any fuel type or network layer on or off, and the totals on screen update to match what is currently visible. For Great Britain and six other European grids, the map can also show live output: what each power station is scheduled to generate right now, the most recent fully measured day of output with a chart of how it changed through the day, live flows on the international power cables, and an overall mix of how the country is generating power at that moment. This live data comes from free, publicly available grid operator sources fetched directly in the browser, refreshed regularly through an automated process. The site itself is a fully static web app built with React, TypeScript, Vite, and the MapLibre mapping library, so it needs no server or API keys to run. You can run it locally with npm, build it for deployment to any static host such as GitHub Pages, Netlify, or Cloudflare Pages, or even generate a single self contained HTML file that works entirely offline. The underlying map data comes from OpenStreetMap and other public sources and ships pre built with the project, though scripts are included to refresh it from source. Adding a new country is described as roughly an afternoon of configuration rather than a large project.